Midfielder Allen returned to the Gills' starting line-up for Saturday's 1-0 victory at Bradford but hobbled off in the 55th minute nursing an ankle knock, bringing an end to an impressive display.
Twelve-goal leading scorer Kedwell missed the game altogether with a hamstring injury and his involvement against the Minstermen at Bootham Crescent is more unlikely.
Otherwise, manager Martin Allen is expected to have a fully-fit squad to select from for the encounter.
The Gills have remained in Yorkshire for their away double-header and know they will return home to Kent having regained top spot in League Two if they can make it six points from six.
- Sports & Recreation
- Bootham Crescent